Preparation method of magnesium hydroxide/aluminum hydroxide/zinc borate synergistic flame-retardant optical cable PVC flame-retardant sheath material

A technology of aluminum hydroxide and magnesium hydroxide, which is applied in the field of flame retardant composite material preparation, can solve the problems of reduced mechanical properties of optical cable flame retardant sheath materials, poor smoke suppression effect, etc., and can improve the leakage trace index and limit oxygen index. , the effect of increasing the thermal decomposition temperature

Active Publication Date: 2020-07-03
HARBIN UNIV OF SCI & TECH
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims to solve the technical problems of reduced mechanical properties and poor smoke suppression effect of the optical cable flame-retardant sheath material prepared by the existing method, and provides a magnesium hydroxide / aluminum hydroxide / zinc borate synergistic flame-retardant optical cable PVC flame-retardant sheath Nesting preparation method

Method used

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  • Preparation method of magnesium hydroxide/aluminum hydroxide/zinc borate synergistic flame-retardant optical cable PVC flame-retardant sheath material
  • Preparation method of magnesium hydroxide/aluminum hydroxide/zinc borate synergistic flame-retardant optical cable PVC flame-retardant sheath material
  • Preparation method of magnesium hydroxide/aluminum hydroxide/zinc borate synergistic flame-retardant optical cable PVC flame-retardant sheath material

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specific Embodiment approach 1

[0026] Embodiment 1: In this embodiment, a method for preparing a magnesium hydroxide / aluminum hydroxide / zinc borate synergistic flame-retardant optical cable PVC flame-retardant sheath material is carried out according to the following steps:

[0027] 1. Weigh 8-10 parts by mass of nano-magnesium hydroxide, 8-10 parts of nano-aluminum hydroxide, 8-10 parts of zinc borate particles, 1.5-2.0 parts of sodium stearate, 3-5 parts of silane coupling agent, 100 parts of PVC resin, 0.9-1.1 parts of pigment carbon black, 1.0-1.1 parts of stearic acid, 42-46 parts of dimethyl nylon acid, 9-11 parts of chlorinated paraffin 52, 6.5-7.5 parts of Ca / Zn compound Stabilizer, 0.2~0.3 parts of hydrotalcite, 0.2~0.3 parts of (3S,6E,10S)-6,10-dimethyl-3-isopropylcyclodecan-6-ene-1,4-dione, 0.2 ~0.3 part of pentaerythritol, 0.1~0.3 part of calcium stearate, 0.1~0.2 part of tetraerythritol ester and 0.04-0.06 part of dilauryl thiodipropionate;

[0028] 2. Add the sodium stearate weighed in step 1...

specific Embodiment approach 2

[0036] Specific embodiment two: the difference between this embodiment and specific embodiment one is: PVC resin is PVC-SG2 resin in the step one; Ca / Zn composite stabilizer is CZ-931Ca / Zn composite stabilizer; The specification of zinc borate particle is Nano-scale, its particle size ≦ 100nm. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0037] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the mass fraction of sodium stearate solution in step 2 is 1.5%, and the mass fraction of silane coupling agent solution is 1.5%. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses a preparation method of a magnesium hydroxide/aluminum hydroxide/zinc borate synergistic flame-retardant optical cable PVC flame-retardant sheath material, and relates to the field of flame-retardant composite material preparation. The invention aims to solve the technical problems of low mechanical properties and poor smoke suppression effect of the optical cable flame-retardant sheath material prepared by the existing method. The method comprises the following steps: 1, weighing raw materials, 2, preparing a sodium stearate and silane coupling agent solution, 3, pretreating a flame retardant, 4, mixing the materials, 5, performing granulation and 6, carrying out mixing. When the PVC flame-retardant sheath material prepared by the invention is combusted, the threeflame retardants are decomposed, and the process not only absorbs heat, but also generates a lot of moisture and a carbonization layer, so that flame is prevented from further contacting with oxygen,and fire disasters are prevented from continuing to occur. When hydroxide and zinc borate are flame-retardant, no harmful substance is discharged, the hydroxide and zinc borate can react with PVC to generate smoke, the smoke amount and toxic gas generated during PVC combustion are reduced, and the flame-retardant and smoke-suppression characteristics are excellent. The preparation method is used for preparing the magnesium hydroxide/aluminum hydroxide/zinc borate synergistic flame-retardant optical cable PVC flame-retardant sheath material.

Description

technical field [0001] The invention relates to the field of preparation of flame-retardant composite materials. Background technique [0002] Optical fiber communication has become an important information transmission channel in the communication industry such as cable television network and digital optical fiber communication system due to its advantages of large transmission capacity, long transmission distance, light weight, strong anti-electromagnetic interference ability, and high fidelity. With the advancement of my country's fiber-to-the-home and fiber-to-the-desktop plans, a large number of optical cables have been laid and used, causing more and more fires, and the consequences have become more and more serious. In order to reduce the occurrence of fires, in addition to standardizing the cable laying environment and strengthening security measures, it is especially necessary to start from the structure, performance, and materials of the cable itself. Improving the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L91/06C08K13/06C08K9/06C08K9/04C08K3/22C08K3/38C08K5/09C08K5/053
CPCC08L27/06C08K2201/011C08K2003/2224C08K2003/2227C08K2003/387C08L2201/02C08L91/06C08K13/06C08K9/06C08K9/04C08K3/22C08K3/38C08K5/09C08K5/053
Inventor 邵璇吕杨汤卉
Owner HARBIN UNIV OF SCI & TECH
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